HIGH UTILISATION - Veritas Backup Exec

This is a discussion on HIGH UTILISATION - Veritas Backup Exec ; We have Compaq Tape MiniLibrary TL891/TL890. When the drives autoclean, the
server utilisation goes sky high and no-one can use the server until the
cleaning has finished.
Compaq say don't use a schedule cleaning,
Veritas say use a cleaning job!
...

HIGH UTILISATION

We have Compaq Tape MiniLibrary TL891/TL890. When the drives autoclean, the
server utilisation goes sky high and no-one can use the server until the
cleaning has finished.

Compaq say don't use a schedule cleaning,
Veritas say use a cleaning job!

The latter seems ok but Compaq warns against this due to high head wear.
Anybody any ideas how to reduce utilisation other that manually editing the
resource scheduler on-line?
Netware 4.11 SP8, BE 8.5.